Dental handpiece and collet wrench therefor

Details Dental handpiece and collet wrench therefor Dental handpiece and collet wrench therefor

1980-05-07

1982-02-02

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

81 55, 81462, A61C 108

Patent

active

043137253

ABSTRACT:
An air driven dental handpiece having an air turbine at one end thereof. Collet means for securing a dental bur therein are positioned within the air turbine. The collet means includes a plurality of collapsible jaws at the bottom thereof. Threads are provided on the exterior surface of the collet means in the area of the jaws. The bottom of the collet means is tapered, and a collet nut is threadedly secured on the collet means. The collet nut has an internal taper which is complementary to the taper of the collet means. The threaded advancement of the collet nut on the collet means causes the collapsing of the jaws of the collet means, through the mating tapers, and accordingly a dental bur can be secured in the collet means.

REFERENCES:
patent: 3324553 (1967-06-01), Borden
patent: 3325899 (1967-06-01), Staunt
patent: 3400459 (1968-09-01), Stemler
patent: 3499223 (1970-03-01), Lieb et al.
patent: 3731384 (1973-05-01), Brooks
patent: 3871097 (1975-03-01), Melde
patent: 3893242 (1975-07-01), Lieb et al.
patent: 3960039 (1976-06-01), Nash et al.
patent: 4015489 (1977-04-01), Lieb et al.
patent: 4198754 (1980-03-01), Lares

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